adding a factory tac rally dash to my charger

[dodgebee]

do anyone know what size hole to drill for adding the  factory tac harness thru firewall i see a  factory dimple where to drill. thanks

[Kern Dog]

You think that everyone knows what car you have? What year, what model?

[krops cars]

I believe that it runs through the bulk head connector.

[71charger_fan]

At least on a '71, you can crimp a couple of terminals on and run the tach signal through the bulkhead disconnect. There's a spare cavity for it if the car wasn't built with a tach.

[Just 6T9 CHGR]

Second gen  tach hole diameter 13/16"  not sure about other years.  Easiest way it to use a step drill bit..do a little at a time till she fits!

[dodgebee]

69 charger has a dimple on fire wall so harness can come thru and connect to coil maybe someone has drilled that hole out and added the harness?

[kent]

Second gen  tach hole diameter 13/16"  not sure about other years.  Easiest way it to use a step drill bit..do a little at a time till she fits!

Guess I'll have to take a looksee to see if I can find a picture of that for my 70. I just ASSuMEed that it went through the bulk head connection also. I'm glad this came up.

Ok that was a hint. If anybody would be so kind to provide a pic of said area. If not shouldn't be too hard to find.

[dodgebee]

see pic below of fire wall with tac harness circled in green.

[kent]

Thanks dodgebee. My that's a mighty fine looking firewall! Can't wait to see some paint on mine. Nice colour.

[dodgebee]

not mine,just put a pic of a firewall i found. thanks